Electric discharge device



May 2Q, 1923 W. A. KNOOP ET AL ELECTRIC DISCHARGE DEVICE Filed May 12, 1919 Patented May 28, E923.

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WILLIAM a. armor, or BROOKLYN, AND mm. a. crorrr, or new roar, n: a,

ASSIGN'OBS 'ro wnsrnan ELECTRIC comranr, moosroaarnn, or NEW roan, m. an, a conroaarron or. new YORK.

ELECTRIC DISCHARGE DEVICE.

Application filed may 12, 1919. serial Ho. 298,831.

To all whom it may concern:

Be it known that we, WILLIAM A. KNOOP, a citizen of the United'states, residing at Brooklyn, in the county of Kings, State of New York, and PAUL P. CIOFFI, a subject of Italy (declarant citizen), residing at New York, in the county of New York and State of New York, respectively, have invented certain new and useful Improvements in Electric Dischar e Devices, of which the following is a fufi, clear, concise, and exact description. 1 T he invention relates to electric discharge devices and a method of manufacturing the same. It has for an'object the provision of an electric discharge device in which the need for a glass support for the electrodes in the form of a cane or arbor is eliminated.

A further object is the provision of such a caneless or arborless electrode mounting as shall provide a rigid and compact'electrode unit.

. The invention in general comprises a plurality of electrodes which are mounted on a rigid wire frame which is connected to the usual press or squash and are by means of the arrangement of the frame rigidly spaced thereon from each other and the walls of the tube.

While in the preferred form of our invention, rigid wires are used as frame members, nevertheless a rigid frame providing the same degree of compactness and rigidity may be provided by'tlie use of glass or other members in place of the wire members.

The invention is illustrated in the drawing which represents in a part elevation, part section view, a preferred form of tube embodying our invention.

The invention as shown in the drawing comprises an evacuated vessel 1 having the usual press or squash 2 sealed in the lower end thereof. A socket of well-known type 3, is attached to the lower end of the evacuated vessel 1 and has terminal plugs 4 attached to its lower end. Four rigid heavy wires 5,

6, 7 and 8 of any suitable material, are im-.

bedded in the upper surface of a press 2 and extend vertically in a spaced parallel relation toward the upper end of the evacuated vessel 1. To the wires-5'and 8 at suitable points 1 intermediate their ends is welded a cylindrical anode 9 w ich has substantially an oval truss-section- This anode is of nickel and is welded to the wires 5 and 8 alon its 1nner surface. A spiral gridlO of nickel wlre is placed within the cylindrical anode 9 and is welded along opposite sides to the wires 6 and 7. The upper end of the Wires 5, 6, 7 and 8 are inserted in apertures in a block of lavite 11. The apertures in the block are counter-sunk at both ends and are slightly larger in diameter than the wires inserted therein. A suitable cement 12, preferably of lead horate is fused into the counter-sinks and around the wires to form a tight jolnt between the lavite and the nickel wire.

it filament 13, formed of any suitable material but preferably of platinum coated as known in the art with suitable chemicals comprises two wires disposed in parallel relation, the upper ends 14 of the wires being held in respective ends or" a ll-shaped yoke member 15. This yoke member 15 is welded at its upper end to a wire 16 which is rigidly imbedded in the lavite block 11 and supports the filament. The lower ends of the filament 13 are connected to lead-in wires 17 which have formed in their length a loop 18. The loop 18 provides means for conducting cur rent to the filament and at the same time, by means of its resiliency, maintains the filament under constant tension and in proper spaced relation. The lead-in wires then extend downwardly through the glass press and are connected to suitable terminals l. This filament is adapted to carry only .2 of an ampere at a pressure of 2 volts. The Wires 6 and 8 are likewise connected respectively to lead-in wires 19 and 20 connected with suitable terminals 4:. The rigidity of the wires 5, 6, and 8 and the connection of their upper ends to the lavite block 11 supports the electrodes as a unit which is rigid,

and the spaced relations of which are constantly maintained.

Itis, of course, understood that various modifications may be made in the structure of this device without in any way departing from the spirit of the invention as expressed in the following claims.

What is claimed is:

1. An electron discharge device comprising an evacuated vessel, a press within said vessel, cathode, grid and anode electrodes its l mountbd on said press within said vessel, and a frame, one of said electrodes surrounding said frame, and the others of said electrodes mounted entirely within said frame and said surrounding electrode.

2. An electron discharge device comprising an evacuated vessel, a press within said vessel, an anode and a cathode above said press, the axis of said electrodes being parallel to the axis of said press, and a. metallic frame connected to said press and supporting said electrodes, said frame being in contact with said anode.

3. An electron discharge device comprising an evacuated vessel, a press within said vessel, a cylindrical elect-rode having a continuous surface above said press with its axis parallel to the axis of said press, and a metallic frame connected to said press and supporting said electrode, said frame comprising a plurality of parallel upright members and insulating material connecting the ends thereof.

4. An electron discharge device comprising an evacuated vessel, a press within said vessel, a cylindrical anode within said vessel above said press, a cathode and a grid, the axis of said anode being parallel to the axis of said press, and a metallic frame connected to-said press, said anode surrounding said frame and the other electrodes whereby substantially all of the inner surface of said anode is subjected to electron bombardment from said cathode.

5. An electron discharge device comprising an evacuated vessel, a press within said vessel, a plurality of rigid metallic electrode-supporting wires mounted on said press, a rigid insulating connection for the upper ends of said wires, a cylindrical anode mounted on and surrounding one ofsaid supporting wires, a cylindrical grid mounted on another of said supporting wires within said anode, and a filamentary cathode lyinging within said anode and grid and supported from said insulating connection. 4

6. An electron discharge device comprising an evacuated vessel, a press within said vessel, a pair of rigid electrode-supporting frame members mounted on said press, a rigid insulating connection for the upper end of said frame members, a cylindrical anode mounted on said frame members and surrounding the same, and another electrode su ported from said rigid connection.

i An electron discharge device comprising an evacuated vessel. a press within said vessel, two pairs of rigid metallic wires extending upward in parallel relation from said press, a rigid insulating and spacing connection for the upper end, of said wires, a cylindrical anode mounted on and surrounding two of said wires above said press, a cylindrical grid mounted on and surrounding two others of said wires and lying within said anode, and a filamentary cathode lyin' within said other electrodes and supporteil from said connection.

8. An electron discharge device comprising an evacuated vessel, a press within said vessel, a pair of rigid parallel electrodesupporting frame members mounted on said press, a rigid connection of insulating material for the upper end of said frame members, a cylindrical grid mounted on Said frame members. and surrounding the same, a cathode supported from said rigid connection and an anode surrounding said grid and cathode.

9. An electron discharge device comprising an evacuated vessel, a press within said vessel, an electrode-support1ng frame mounted on said press, said frame comprising a pair of .metallic side members and an insulating portion connecting said side members, a plurality of lead-in Wires in said press, some of said lead-in wires have spring loops in their length, and a cathode comprising parallel wires connected at one end to said insulating portion and at the other end to said lead-in wires.

, 10. An electron discharge device comprising an evacuated vessel, a press within said vessel, an electrode-supporting frame comprising a plurality of parallel spaced metallicwires mounted on said press, said frame having an insulating portion at the top, a plurality of lead-in wires in said press having spring loops in their length, a U-shape conducting member attached to said insulating portion. and a cathode comprising a plurality of parallel wires connected at one end to said lead-in wires and at the other end to said member.

11. An electron discharge device comprising an evacuated vessel, 9. press within said vessel, an anode and a cathode above said press and parallel thereto, and a metallic frame connected to said press and supporting said electrodes, substantially all of one side of said anode being subjected to electron bombardment from said cathode.

12. An electron discharge device comprising an evacuated vessel, a cathode, an anode,

a press, said anode and cathode having their axes substantially parallel to said press, a support for said cathode comprising a metallic frame arising from said press, substantially all of one surface of said anode being subjected to electron bombardment.

13. An electron discharge device comprising an evacuated vessel, a cathode, an anode surrounding said cathode, a press, a support for said cathode comprising metallic members arising from said press, insulation material connecting the ends of said members, substantially all of the inner surface of said anode being subjected to electron bombardment from said cathode,

14. An electron discharge device comprising a cathode, an anode, a grid, a press, a suppmrt for said anode and grid comprising a metallic frame arising from said press, insulating material clmnected to said frame for supporting said cathode, said anode surrounding said frame, substantially all of the inner surface of said anode being subjected to electron bombardment from said cathode.

15. An electron discharge device comprising an evacuated vessel, a cathode, an anode, a press, a support for said cathode comprising a plurality of metallic upright members arising from said press, and interconneeted by insulating material, and lead in wires through said press for said anode and cathode.

16. An electron discharge device comprising a cathode, an anode surrounding said cathode, a press, a support for said cathode comprising a plurality of metallic upright members arising from said press and interconnected by insulating material, and lead in Wires for said electrodes, the lead in wire for said anode constituting a continuation of one of said members.

17. An electron discharge device comprising a stem, cathode, anode and grid electrodes having their longitudinal axes substantially parallel to said stem, a support for said electrodes comprising a plurality of metallic upright members arisingfrom said stem, and lead in wires through said stem for said electrodes.

18. An electron discharge device comprising a cathode, an anode, a grid, a press, said anode and grid surrounding said cathode, a support for said electrodes comprising a metallic frame arising from said press and terminating in a block of insumcaeoe all.

lating material, and lead in wires-through said press for said anode and cathode.

19. An electron discharge device comprising a stem, a plurality of electrodes having their axes substantially parallel to said stem, a metallic member arising from said stem for supporting one of said electrodes and a metallic member arising from sai stem for supporting another of said electrodes independently of said other member.

20. An electron discharge device comprising an anode, a cathode, a grid, a press, said anode and grid surrounding said cathode, a metallic member arising from said press for supportingsaid anode, a metallic member arising from said press for supporting said grid, insulating material joining the ends of said members remote from said press, said cathode being supported from said insulating material.

21. A thermionic device comprising an evacuated vessel, an anode and a cathode Within said vesseha plurality of rigid wires supporting said electrodes, and insulating.

material connectedacross said wires within but apart from said vessel to maintain the space relation between said wires.

22. An electron discharge device comprising an evacuated vessel having a stem, a metallic frame supported by said stem, an anode and a cathode supported by said frame, said anode surrounding said frame and having substantially its entire inner surface subjected to electron bombardment from said cathode, said cathode being insulatingly supported by said frame.

In witness whereof, we hereunto subscribe our names this 7th day of May, A. D. 1919.

WILLIAMA. KNOOP. PAUL P. CIOFFI.

DlSQLAIMEFi 1,456,505.Willtam A: Kaoop, Brooklyn, and Paul P. Oiqfi, New York, N. Y. ELECTRIC DISCHARGE DEVICE. Patent dated May 29, 1923; Disclaimer filed July 7, 1931-, by the assignee, Western Electric Company, Incorporated.

. Hereby enters this disclaimer relative to claims, 2, 11, and 12 of said Letters Patent to wit: to the combination of elements set forth 1n said claims, except as the same": are embodied in a vacuum tube wherein the frame comprises a pair of uprlght members'connected to the press and supporting both anode and cathode.

Your petitioner hereby further enters this disclaimer relative to claim 15 of said Letters Patent to .wit: to the combination of elements set forth in said claim, except as the same are embodied in a vacuum tube wherein the upright members support the anode intermediate their ends and are interconnected by insulating material at their ends opposite the press, which material supports the cathode. I Your petitioner hereby further enters this disclaimer to said claim 17 of said Letters Patent to wit: to the combination'of elements set forth in said claim, except as the same are embodied in a vacuum tube wherein the anode and grid electrodes are circumferentially complete, and the said electrodes are solely supported by wires embedded in the stem of the tube.

7 Your petitioner hereby further enters this disclaimer'to said claim 19 of said Letters Patent which is in the following words, to H 19. electron discharge device comprising a'stem, a plurality of electrodes having their axes substantially parallel to said stem, a metallic member arising from said stem for supporting one of sa1d electrodes, and a metallic member arising from said stem for supporting another of sa1d electrodes independentlyof said other.

member.

Your petitioner hereby further enters this disclaimer relative to claim 21 of said Letters Patent to Wit: to the combination of elements set forth in said claim except as the same are embodied in avacuum tube wherein the rigid wires support the anode intermediate their ends and are interconnected by insulating material at their ends opposite the press, which material supportes the cathode.

(Ofiicicl Gazette August 4, 1931.) 

